Sazonov–Paléologue Agreement
The Sazonov–Paléologue Agreement was a 26 April 1916 letter from Russian Foreign minister Sergey Sazonov to French ambassador to Russia Maurice Paléologue regarding Western Armenia and the Anglo-French Sykes–Picot Agreement. The agreement for Russian influence over Western Armenia was given in return for Russian assent to the Sykes-Picot arrangement.
Source: Wikipedia — Sazonov–Paléologue Agreement (CC BY-SA 4.0)